1405312630 has 16 divisors (see below), whose sum is σ = 2530316880. Its totient is φ = 561957472.

The previous prime is 1405312613. The next prime is 1405312631. The reversal of 1405312630 is 362135041.

It is a junction number, because it is equal to n+sod(n) for n = 1405312595 and 1405312604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405312631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17661 + ... + 55879.

It is an arithmetic number, because the mean of its divisors is an integer number (158144805).

Almost surely, 2^1405312630 is an apocalyptic number.

1405312630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1405312630 is a deficient number, since it is larger than the sum of its proper divisors (1125004250).

1405312630 is a wasteful number, since it uses less digits than its factorization.

1405312630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41903.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1405312630 is about 37487.4996498833. The cubic root of 1405312630 is about 1120.1021989012.

Adding to 1405312630 its reverse (362135041), we get a palindrome (1767447671).

The spelling of 1405312630 in words is "one billion, four hundred five million, three hundred twelve thousand, six hundred thirty".